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Introduction
Published in Praveen Nagarajan, Matrix Methods of Structural Analysis, 2019
Structural analysis deals with the determination of response (forces and displacements) of the structure subjected to loads. The rapid development of computers and the need for complex and light weight structures lead to the development of matrix methods of structural analysis. The analysis procedure can be concisely written using matrix notations and are suitable for computer programming.
Structural requirements
Published in Angus J. Macdonald, Structure and Architecture, 2018
The purpose of structural analysis is to determine the magnitudes of all of the forces, internal and external, that occur on and in a structure when the most unfavourable load conditions occur. It is a procedure in which the external reactions that act at the foundations of a structure and the internal forces in its elements are calculated from the loads (Figure 2.15). This is a process in which the structure is reduced to its most basic abstract form and considered separately from the rest of the building that it will support.
Finite-element method
Published in A. Ghali, A. M. Neville, T. G. Brown, Structural Analysis, 2017
A. Ghali, A. M. Neville, T. G. Brown
The finite-element method is widely used in structural analysis. The method is also used in a wide range of physical problems1 including heat transfer, seepage, flow of fluids, and electrical and magnetic potential. In the finite-element method, a continuum is idealized as an assemblage of finite elements with specified nodes. The infinite number of degrees of freedom of the continuum is replaced by specified unknowns at the nodes.
Morphological characterisation of ANSYS 3-D modelled aggregates
Published in International Journal of Pavement Engineering, 2022
Iqbal Marie, M. Mahdi, Randa Oqab Mujalli
Concrete structural elements under various loading levels can be studied through experimental analysis. This method returns the structure's real behaviour. However, it is time-consuming and costly and requires trained technicians. On the other hand, these structural components are also studied using finite element analysis (FEA). FEA is a structural analysis method that provides an accurate prediction of a component's reaction under various structural loads. The use of FEA to investigate the behaviour of concrete has been the preferred method due to its considerable rapidness when compared to the experimental method and it is also more cost-effective (Badiger, 2014).
A study towards interdisciplinary research: a Material-based Integrated Computational Design Model (MICD-m) in architecture
Published in Architectural Science Review, 2018
Material needs to be incorporated to the design process right at the beginning. The physical and mechanical properties of the materials are identified at the material database of the MICD-m, developed in Microsoft Visual Studio. Since the model is exemplified based on static structural analysis, critical material properties for the assessment, including the density, elastic modulus, Poisson ratio, yield, tensile and compressive strength (Ashby 1999) are specified, in order to assess the relationship of material with form and performance (Figure 6).
An insight into Transfemoral Prostheses: Materials, modelling, simulation, fabrication, testing, clinical evaluation and performance perspectives
Published in Expert Review of Medical Devices, 2022
K. Amudhan, A. Vasanthanathan, J. Anish Jafrin Thilak
FEA has been identified as a useful tool for the stress and strain behavior determination in lower limb prosthetics. Many experts consider FEA as one of the most common numerical methods for structural analysis [76]. FEA is utilized in many industries and its value is clearly demonstrated in the field of prosthetics and orthotics. Computational modeling, especially finite element approaches are expected to address the experimental measurement challenges. Benefits of Using Finite Element methods includes prediction of complete field data on stress, strain, and deformation inside the simulated items and parametric analysis for best design can also be performed [77]. The goal behind FEA is to simplify a complex mechanical issue to a series of algebraic equations, in this case calculating structural strength of the LLP. A prosthetic component is divided into small finite parts of basic geometry to compute deformations, stresses or even failure. The material properties of each element must be known. The mechanical reaction of a whole system subjected to external forces can be predicted if all elements are in equilibrium of forces and moments. FEA allows users to test a part or assembly performance under forces and torques. Due to the rise in computer processing capacity in recent years, FEA is becoming a more efficient and precise technique with many commercially available simulation software packages. Table 3 highlights prior FEA simulation packages and validation procedures for Lower limb prosthetic components. In any commercial analysis or simulation package there are many modules, earlier researchers have preferred structural analysis for predicting the mechanical parameters of the Lower limb prosthetic components, which are exposed to compressive and cyclic loading as they are load bearing members subjected to mobility.